Paper trimmer



Dec. 26, 1933. H. E. SIMONTON PAPER TRIMMER Filed May 20, 1931 [Ma-W704 6:696 7 Jxzya aw ifgether as by screws 17. The casing 15 is holrevolubly mounted. The bearing, 19 is held inv "Plat n 26, 1933 g 1,940,976

siosis' i 1 p I P R K W v! Hugh E.'Sim'onton, 'Memphiif'le'nn. I V I Application Mamdjiesif s rial"'No.' t3s,s55,;

1 olaimq-(o ei ipg- This invention "relates to improvements in place by a post 21, the 'inner'end of Which-is paper cutters and particularly 'to a tool 'forthreaded and screwed-into-the boss 18. The trimming wall paper,which is designed to run cover 16 has a forwardly projecting hub22 which upon and be guided by a straight edge and which is bored out to embrace the post '21. Disposed employs a rotating disc as the cuttin'gelementx: within the hollowedout portion of the case;15;v

The objects of this=invention are:-l and projecting forwardly from the back thereof Toprovide a'tool which is simple'in-construcare pins 23, 24 which carry a flat spring 25; tionrand efiicient in action; which'may be oper- 26 are arms pivotally mounted on pins 27 which ated with-either hand and ineither direction are symmetrically disposed with relation'to the IQ and which is so constructed that. theipressure bossl8 and which project forwardly from the necessary to bring the cutting knife into cutting back'of the casing These arms extend longitu proximity to the paper is evenly distributed on dinally away from the boss 18, and eachcarries the straight edge and assists in holding the at its free end a roller 28. The spring 25 is disstraight edge in place. posed over the post 23 and under the pins 24 15' 31 A further object is to so construct the tool that and by these latter pins is held down against the the center of pressure in operating the tool lies 'arms 26. -All of these parts are disposed behind within the transverse limitsof the straight edge the cutting disk 20; whereby the pressures exerted act directly down- Secured to the back of the casing 15 as by'screws ward on the straight edge rather than withan 29 and extending therebelow is an angle shaped 0' lt i efiect, retainer 30 which is substantially the same length The means by which the foregoing and other as the casing 15. The horizontal leg 31 of'this objects are accomplished and the manner of their retainer projects forwardly beneath and underaccomplishment, will readily be understood from lies the lower edge of the casing and the rollers the following specification on reference to the 28. The screws 29 pass through slots 32 in the 25 accompanying drawing, in which:- back portion of the retainer, which slots permit Fig. 1 is a side elevation of the tool with a adjustment of the retainer to provide more or less portion of the case broken away to' disclose the clearance between the leg 31 thereof and the botinterior thereof. tom of the casing and which also allow for adjust- Fig. 2 is a similar view with the cover plate ment to meet variations in size of cutting disks. 3'0 and cutting knife removed and with a portion The tool'and the straight edge are assembled of the straight edge in section on the line II-II by engaging the leg 31 of the retainer beneath the i of Fig. 3. V I I roller support 12 of the straight edge, at either Fig. 3 is a sectional elevation of the tool taken end of the straight edge, then moving the tool on the line HIIII of Fig. 1. along the straight edge causing the rollers 28 to 35, Referring now to the drawing in whichthe ride in succession on the top of the support 12.

various parts are indicated by numerals, the The distance from the back of the knife to the 7 straight edge comprises an elongated strip of front side of the retainer 30 is very slightly greater sheet metal 10, having its forward edge 11 turned than the width of the roller strip so that the tool upward at right angles, and thence inward'to has limited lateralclearanceor play; The depth 40'forma roller support and guide 12 parallel to of the straight edge is such that the knife 20 is '95 thebase. If desired, longitudinal ribs 13 may normally held just clear of the bottom of the project slightly below the'bottom of the part 10. straight edge. i 14 is an elongated strip, preferably of wood which If desired, the rollers 28 may. be entirely omitted may be used if desired in connection with the and the ends of the arms allowed to bear on and 45'-metal straight edge in which case the metal slide along the support 12. I would be secured to the wood in any desired In using the tool the paper to be trimmed is manner; laid out along the top of the table 33 and the The cutting tool comprises a handle made up of straight edge is laid along the line ofv the desired a casing 15 and a cover 16 which are secured tocut. Slight downward pressure is then exerted I contacting the cutting knife with the paper to be 105. lowed out and has a forwardly projecting boss 18 trimmed and transferring the downward pressure positioned at the longitudinal center of the through the arms 26 to the straight edge. This casing, which boss carries a .ball bearing 19, on' movement releases the retainer leg from the unwhich a sharpened cutting disk or knife 20 is" dersideof the support and allows easy movement of the tool relative thereto. The knife is then straight edge cutting the paper along the desired line and in either direction. The straight edge may then be moved to a new position and the cut extended, the trimmed paper shifted along the table, an additional amount unrolled the straight edge positioned, and the operation continued. It will be particularly noted that the pressure on the straight edge is carried by the rollers 28 and that thetool maytherefore be easily shifted along the straight edge. It will further be noted that such pressure is directly downward on the straight edge and that this pressure lies entirely within the lateral limits of the straight edge so that ir respective of whether the straight edge isheld" or not there is no overturning or tendency to overturn it. It will further be noted that the pressure exerted on the straight edge and to-the pap'er which is to be trimmed is directly contiguous to and equally distributed on both sides of the'cutting point so that the. paper is firmly held in the zone of action of thecutting knife. The cutting knife also is held against theface of the, straight edge-and caused to move parallel therewith by the retainer 30 so that; irrespective of normal effort, a straight out along the edge ofthe straight edge will be made no matter how loosely held or how poorly guided the device may be.

Having described my invention, what I claim is: v

In a tool of the character described, for use with a straight edge comprising an elongated strip of l as K moved forward and/or backward along the zoted on one of said pins and extending longitudinally away from said boss, rollers each mounted on the free end of one of said arms, and adapted to rest on said roller support, an angle shaped retaining member secured to the back of said casing, extending therebelow and having its horizontal leg extending forward beneath said roller support, a spring in said casing urging said rollers downward, against said support andsaid retaining member upwardagainstthe underside of said support, all of said partsbeing positioned rear wardly of said disk-and centered with relation to said grip, whereby downward pressure on said casing will free. said retaining member and. be centered over and equally borneby said rollers, permitting equal, action either forwarder back.- ward, and a cover secured to said casing, covering substantially all but. the lower edge of said disk; 195

HUGH: E; SIMONTON. 

